P{EP}IdhGE9298 is located in an exon that is shared by all Idh isoforms (+301 of Idhm1 ORF, +244 of Idhm2 ORF, and +205 of Idhc ORF).
IdhGE9298 mutant adults show significantly reduced survival rate compared to controls and display age-dependent loss of dopaminergic neurons from the dorsolateral cluster 1 and the dorsomedial cluster (while the number of neurons in both young and aged adults is not significantly different relative to age-matched controls).